postcss-ratio

PostCSS Aspect Ratio

PostCSS plugin to simplify maintaining an elements aspect ratio.

Usage

npm install --save-dev postcss-ratio

postcss([ require('postcss-ratio') ])

See PostCSS docs for examples for your environment.

Markup

<div class="foo">
    <div>
        <!--Your Content Here -->
    </div>
</div>

CSS

.foo {
    width: 300px;
    ratio: '1:2';
}

After PostCSS

.foo {
  width: 300px;
  position: relative;
}
 
.foo::before {
  display: block;
  content: "";
  width: 100%;
  padding-top: 50%;
}
 
.foo > * {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}